title: Development of multichannel array transducer of displacement mechanical-myogram.
abstract: The myoelectric signal (EMG) recorded on the skin surface is a time-related and spatial aggregate of the action potentials of motor units of skeletal muscle, and it indicates the input information for muscle contraction. The mechano-myographic signal (MMG) is a vibration of skin/muscle surface caused by muscle contraction and it directly reflects the activity of muscle contraction. The two-dimensional generation mechanism of MMG is still n ot clarified in detail. In this study, the displacement MMGs were recorded at 25 measuring points using 5 × 5 displacement MMG array transducer within 50× 50 mm, while the motor point of the biceps brachii was electro-stimulated. The spatial propagation map of twitch waveform of displacement MMG was drawn.
authors.forename: H
authors.initials: H
authors.lastname: Oka
authors.forename: Y
authors.initials: Y
authors.lastname: Konishi
authors.forename: T
authors.initials: T
authors.lastname: Kitawaki
authors.forename: N
authors.initials: N
authors.lastname: Ichihashi
authors.forename: M
authors.initials: M
authors.lastname: Yoshida
mesh_terms: D001696:Biomechanical Phenomena; D004550:Elbow / Q000502:physiology; D004566:Electrodes; D006801:Humans; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology; D009213:Myography / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted; D014159:Transducers; D058067:Wavelet Analysis; D055815:Young Adult